okhttp3.OkHttpClient Maven / Gradle / Ivy
/*
* Copyright (C) 2012 Square, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package okhttp3;
import java.net.MalformedURLException;
import java.net.Proxy;
import java.net.ProxySelector;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Random;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import javax.annotation.Nullable;
import javax.net.SocketFactory;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;
import okhttp3.internal.Internal;
import okhttp3.internal.Util;
import okhttp3.internal.cache.InternalCache;
import okhttp3.internal.connection.RealConnection;
import okhttp3.internal.connection.RouteDatabase;
import okhttp3.internal.connection.StreamAllocation;
import okhttp3.internal.platform.Platform;
import okhttp3.internal.tls.CertificateChainCleaner;
import okhttp3.internal.tls.OkHostnameVerifier;
import okhttp3.internal.ws.RealWebSocket;
import static okhttp3.internal.Util.assertionError;
import static okhttp3.internal.Util.checkDuration;
/**
* Factory for {@linkplain Call calls}, which can be used to send HTTP requests and read their
* responses.
*
* OkHttpClients should be shared
*
* OkHttp performs best when you create a single {@code OkHttpClient} instance and reuse it for
* all of your HTTP calls. This is because each client holds its own connection pool and thread
* pools. Reusing connections and threads reduces latency and saves memory. Conversely, creating a
* client for each request wastes resources on idle pools.
*
*
Use {@code new OkHttpClient()} to create a shared instance with the default settings:
*
{@code
*
* // The singleton HTTP client.
* public final OkHttpClient client = new OkHttpClient();
* }
*
* Or use {@code new OkHttpClient.Builder()} to create a shared instance with custom settings:
*
{@code
*
* // The singleton HTTP client.
* public final OkHttpClient client = new OkHttpClient.Builder()
* .addInterceptor(new HttpLoggingInterceptor())
* .cache(new Cache(cacheDir, cacheSize))
* .build();
* }
*
* Customize your client with newBuilder()
*
* You can customize a shared OkHttpClient instance with {@link #newBuilder()}. This builds a
* client that shares the same connection pool, thread pools, and configuration. Use the builder
* methods to configure the derived client for a specific purpose.
*
*
This example shows a call with a short 500 millisecond timeout:
{@code
*
* OkHttpClient eagerClient = client.newBuilder()
* .readTimeout(500, TimeUnit.MILLISECONDS)
* .build();
* Response response = eagerClient.newCall(request).execute();
* }
*
* Shutdown isn't necessary
*
* The threads and connections that are held will be released automatically if they remain idle.
* But if you are writing a application that needs to aggressively release unused resources you may
* do so.
*
*
Shutdown the dispatcher's executor service with {@link ExecutorService#shutdown shutdown()}.
* This will also cause future calls to the client to be rejected.
{@code
*
* client.dispatcher().executorService().shutdown();
* }
*
* Clear the connection pool with {@link ConnectionPool#evictAll() evictAll()}. Note that the
* connection pool's daemon thread may not exit immediately.
{@code
*
* client.connectionPool().evictAll();
* }
*
* If your client has a cache, call {@link Cache#close close()}. Note that it is an error to
* create calls against a cache that is closed, and doing so will cause the call to crash.
*
{@code
*
* client.cache().close();
* }
*
* OkHttp also uses daemon threads for HTTP/2 connections. These will exit automatically if they
* remain idle.
*/
public class OkHttpClient implements Cloneable, Call.Factory, WebSocket.Factory {
static final List DEFAULT_PROTOCOLS = Util.immutableList(
Protocol.HTTP_2, Protocol.HTTP_1_1);
static final List DEFAULT_CONNECTION_SPECS = Util.immutableList(
ConnectionSpec.MODERN_TLS, ConnectionSpec.CLEARTEXT);
static {
Internal.instance = new Internal() {
@Override public void addLenient(Headers.Builder builder, String line) {
builder.addLenient(line);
}
@Override public void addLenient(Headers.Builder builder, String name, String value) {
builder.addLenient(name, value);
}
@Override public void setCache(OkHttpClient.Builder builder, InternalCache internalCache) {
builder.setInternalCache(internalCache);
}
@Override public boolean connectionBecameIdle(
ConnectionPool pool, RealConnection connection) {
return pool.connectionBecameIdle(connection);
}
@Override public RealConnection get(ConnectionPool pool, Address address,
StreamAllocation streamAllocation, Route route) {
return pool.get(address, streamAllocation, route);
}
@Override public boolean equalsNonHost(Address a, Address b) {
return a.equalsNonHost(b);
}
@Override public Socket deduplicate(
ConnectionPool pool, Address address, StreamAllocation streamAllocation) {
return pool.deduplicate(address, streamAllocation);
}
@Override public void put(ConnectionPool pool, RealConnection connection) {
pool.put(connection);
}
@Override public RouteDatabase routeDatabase(ConnectionPool connectionPool) {
return connectionPool.routeDatabase;
}
@Override public int code(Response.Builder responseBuilder) {
return responseBuilder.code;
}
@Override
public void apply(ConnectionSpec tlsConfiguration, SSLSocket sslSocket, boolean isFallback) {
tlsConfiguration.apply(sslSocket, isFallback);
}
@Override public HttpUrl getHttpUrlChecked(String url)
throws MalformedURLException, UnknownHostException {
return HttpUrl.getChecked(url);
}
@Override public StreamAllocation streamAllocation(Call call) {
return ((RealCall) call).streamAllocation();
}
@Override public Call newWebSocketCall(OkHttpClient client, Request originalRequest) {
return RealCall.newRealCall(client, originalRequest, true);
}
};
}
final Dispatcher dispatcher;
final @Nullable Proxy proxy;
final List protocols;
final List connectionSpecs;
final List interceptors;
final List networkInterceptors;
final EventListener.Factory eventListenerFactory;
final ProxySelector proxySelector;
final CookieJar cookieJar;
final @Nullable Cache cache;
final @Nullable InternalCache internalCache;
final SocketFactory socketFactory;
final @Nullable SSLSocketFactory sslSocketFactory;
final @Nullable CertificateChainCleaner certificateChainCleaner;
final HostnameVerifier hostnameVerifier;
final CertificatePinner certificatePinner;
final Authenticator proxyAuthenticator;
final Authenticator authenticator;
final ConnectionPool connectionPool;
final Dns dns;
final boolean followSslRedirects;
final boolean followRedirects;
final boolean retryOnConnectionFailure;
final int connectTimeout;
final int readTimeout;
final int writeTimeout;
final int pingInterval;
public OkHttpClient() {
this(new Builder());
}
OkHttpClient(Builder builder) {
this.dispatcher = builder.dispatcher;
this.proxy = builder.proxy;
this.protocols = builder.protocols;
this.connectionSpecs = builder.connectionSpecs;
this.interceptors = Util.immutableList(builder.interceptors);
this.networkInterceptors = Util.immutableList(builder.networkInterceptors);
this.eventListenerFactory = builder.eventListenerFactory;
this.proxySelector = builder.proxySelector;
this.cookieJar = builder.cookieJar;
this.cache = builder.cache;
this.internalCache = builder.internalCache;
this.socketFactory = builder.socketFactory;
boolean isTLS = false;
for (ConnectionSpec spec : connectionSpecs) {
isTLS = isTLS || spec.isTls();
}
if (builder.sslSocketFactory != null || !isTLS) {
this.sslSocketFactory = builder.sslSocketFactory;
this.certificateChainCleaner = builder.certificateChainCleaner;
} else {
X509TrustManager trustManager = systemDefaultTrustManager();
this.sslSocketFactory = systemDefaultSslSocketFactory(trustManager);
this.certificateChainCleaner = CertificateChainCleaner.get(trustManager);
}
this.hostnameVerifier = builder.hostnameVerifier;
this.certificatePinner = builder.certificatePinner.withCertificateChainCleaner(
certificateChainCleaner);
this.proxyAuthenticator = builder.proxyAuthenticator;
this.authenticator = builder.authenticator;
this.connectionPool = builder.connectionPool;
this.dns = builder.dns;
this.followSslRedirects = builder.followSslRedirects;
this.followRedirects = builder.followRedirects;
this.retryOnConnectionFailure = builder.retryOnConnectionFailure;
this.connectTimeout = builder.connectTimeout;
this.readTimeout = builder.readTimeout;
this.writeTimeout = builder.writeTimeout;
this.pingInterval = builder.pingInterval;
if (interceptors.contains(null)) {
throw new IllegalStateException("Null interceptor: " + interceptors);
}
if (networkInterceptors.contains(null)) {
throw new IllegalStateException("Null network interceptor: " + networkInterceptors);
}
}
private X509TrustManager systemDefaultTrustManager() {
try {
TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(
TrustManagerFactory.getDefaultAlgorithm());
trustManagerFactory.init((KeyStore) null);
TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
if (trustManagers.length != 1 || !(trustManagers[0] instanceof X509TrustManager)) {
throw new IllegalStateException("Unexpected default trust managers:"
+ Arrays.toString(trustManagers));
}
return (X509TrustManager) trustManagers[0];
} catch (GeneralSecurityException e) {
throw assertionError("No System TLS", e); // The system has no TLS. Just give up.
}
}
private SSLSocketFactory systemDefaultSslSocketFactory(X509TrustManager trustManager) {
try {
SSLContext sslContext = SSLContext.getInstance("TLS");
sslContext.init(null, new TrustManager[] { trustManager }, null);
return sslContext.getSocketFactory();
} catch (GeneralSecurityException e) {
throw assertionError("No System TLS", e); // The system has no TLS. Just give up.
}
}
/** Default connect timeout (in milliseconds). */
public int connectTimeoutMillis() {
return connectTimeout;
}
/** Default read timeout (in milliseconds). */
public int readTimeoutMillis() {
return readTimeout;
}
/** Default write timeout (in milliseconds). */
public int writeTimeoutMillis() {
return writeTimeout;
}
/** Web socket ping interval (in milliseconds). */
public int pingIntervalMillis() {
return pingInterval;
}
public Proxy proxy() {
return proxy;
}
public ProxySelector proxySelector() {
return proxySelector;
}
public CookieJar cookieJar() {
return cookieJar;
}
public Cache cache() {
return cache;
}
InternalCache internalCache() {
return cache != null ? cache.internalCache : internalCache;
}
public Dns dns() {
return dns;
}
public SocketFactory socketFactory() {
return socketFactory;
}
public SSLSocketFactory sslSocketFactory() {
return sslSocketFactory;
}
public HostnameVerifier hostnameVerifier() {
return hostnameVerifier;
}
public CertificatePinner certificatePinner() {
return certificatePinner;
}
public Authenticator authenticator() {
return authenticator;
}
public Authenticator proxyAuthenticator() {
return proxyAuthenticator;
}
public ConnectionPool connectionPool() {
return connectionPool;
}
public boolean followSslRedirects() {
return followSslRedirects;
}
public boolean followRedirects() {
return followRedirects;
}
public boolean retryOnConnectionFailure() {
return retryOnConnectionFailure;
}
public Dispatcher dispatcher() {
return dispatcher;
}
public List protocols() {
return protocols;
}
public List connectionSpecs() {
return connectionSpecs;
}
/**
* Returns an immutable list of interceptors that observe the full span of each call: from before
* the connection is established (if any) until after the response source is selected (either the
* origin server, cache, or both).
*/
public List interceptors() {
return interceptors;
}
/**
* Returns an immutable list of interceptors that observe a single network request and response.
* These interceptors must call {@link Interceptor.Chain#proceed} exactly once: it is an error for
* a network interceptor to short-circuit or repeat a network request.
*/
public List networkInterceptors() {
return networkInterceptors;
}
public EventListener.Factory eventListenerFactory() {
return eventListenerFactory;
}
/**
* Prepares the {@code request} to be executed at some point in the future.
*/
@Override public Call newCall(Request request) {
return RealCall.newRealCall(this, request, false /* for web socket */);
}
/**
* Uses {@code request} to connect a new web socket.
*/
@Override public WebSocket newWebSocket(Request request, WebSocketListener listener) {
RealWebSocket webSocket = new RealWebSocket(request, listener, new Random());
webSocket.connect(this);
return webSocket;
}
public Builder newBuilder() {
return new Builder(this);
}
public static final class Builder {
Dispatcher dispatcher;
@Nullable Proxy proxy;
List protocols;
List connectionSpecs;
final List interceptors = new ArrayList<>();
final List networkInterceptors = new ArrayList<>();
EventListener.Factory eventListenerFactory;
ProxySelector proxySelector;
CookieJar cookieJar;
@Nullable Cache cache;
@Nullable InternalCache internalCache;
SocketFactory socketFactory;
@Nullable SSLSocketFactory sslSocketFactory;
@Nullable CertificateChainCleaner certificateChainCleaner;
HostnameVerifier hostnameVerifier;
CertificatePinner certificatePinner;
Authenticator proxyAuthenticator;
Authenticator authenticator;
ConnectionPool connectionPool;
Dns dns;
boolean followSslRedirects;
boolean followRedirects;
boolean retryOnConnectionFailure;
int connectTimeout;
int readTimeout;
int writeTimeout;
int pingInterval;
public Builder() {
dispatcher = new Dispatcher();
protocols = DEFAULT_PROTOCOLS;
connectionSpecs = DEFAULT_CONNECTION_SPECS;
eventListenerFactory = EventListener.factory(EventListener.NONE);
proxySelector = ProxySelector.getDefault();
cookieJar = CookieJar.NO_COOKIES;
socketFactory = SocketFactory.getDefault();
hostnameVerifier = OkHostnameVerifier.INSTANCE;
certificatePinner = CertificatePinner.DEFAULT;
proxyAuthenticator = Authenticator.NONE;
authenticator = Authenticator.NONE;
connectionPool = new ConnectionPool();
dns = Dns.SYSTEM;
followSslRedirects = true;
followRedirects = true;
retryOnConnectionFailure = true;
connectTimeout = 10_000;
readTimeout = 10_000;
writeTimeout = 10_000;
pingInterval = 0;
}
Builder(OkHttpClient okHttpClient) {
this.dispatcher = okHttpClient.dispatcher;
this.proxy = okHttpClient.proxy;
this.protocols = okHttpClient.protocols;
this.connectionSpecs = okHttpClient.connectionSpecs;
this.interceptors.addAll(okHttpClient.interceptors);
this.networkInterceptors.addAll(okHttpClient.networkInterceptors);
this.eventListenerFactory = okHttpClient.eventListenerFactory;
this.proxySelector = okHttpClient.proxySelector;
this.cookieJar = okHttpClient.cookieJar;
this.internalCache = okHttpClient.internalCache;
this.cache = okHttpClient.cache;
this.socketFactory = okHttpClient.socketFactory;
this.sslSocketFactory = okHttpClient.sslSocketFactory;
this.certificateChainCleaner = okHttpClient.certificateChainCleaner;
this.hostnameVerifier = okHttpClient.hostnameVerifier;
this.certificatePinner = okHttpClient.certificatePinner;
this.proxyAuthenticator = okHttpClient.proxyAuthenticator;
this.authenticator = okHttpClient.authenticator;
this.connectionPool = okHttpClient.connectionPool;
this.dns = okHttpClient.dns;
this.followSslRedirects = okHttpClient.followSslRedirects;
this.followRedirects = okHttpClient.followRedirects;
this.retryOnConnectionFailure = okHttpClient.retryOnConnectionFailure;
this.connectTimeout = okHttpClient.connectTimeout;
this.readTimeout = okHttpClient.readTimeout;
this.writeTimeout = okHttpClient.writeTimeout;
this.pingInterval = okHttpClient.pingInterval;
}
/**
* Sets the default connect timeout for new connections. A value of 0 means no timeout,
* otherwise values must be between 1 and {@link Integer#MAX_VALUE} when converted to
* milliseconds.
*/
public Builder connectTimeout(long timeout, TimeUnit unit) {
connectTimeout = checkDuration("timeout", timeout, unit);
return this;
}
/**
* Sets the default read timeout for new connections. A value of 0 means no timeout, otherwise
* values must be between 1 and {@link Integer#MAX_VALUE} when converted to milliseconds.
*/
public Builder readTimeout(long timeout, TimeUnit unit) {
readTimeout = checkDuration("timeout", timeout, unit);
return this;
}
/**
* Sets the default write timeout for new connections. A value of 0 means no timeout, otherwise
* values must be between 1 and {@link Integer#MAX_VALUE} when converted to milliseconds.
*/
public Builder writeTimeout(long timeout, TimeUnit unit) {
writeTimeout = checkDuration("timeout", timeout, unit);
return this;
}
/**
* Sets the interval between web socket pings initiated by this client. Use this to
* automatically send web socket ping frames until either the web socket fails or it is closed.
* This keeps the connection alive and may detect connectivity failures early. No timeouts are
* enforced on the acknowledging pongs.
*
* The default value of 0 disables client-initiated pings.
*/
public Builder pingInterval(long interval, TimeUnit unit) {
pingInterval = checkDuration("interval", interval, unit);
return this;
}
/**
* Sets the HTTP proxy that will be used by connections created by this client. This takes
* precedence over {@link #proxySelector}, which is only honored when this proxy is null (which
* it is by default). To disable proxy use completely, call {@code setProxy(Proxy.NO_PROXY)}.
*/
public Builder proxy(@Nullable Proxy proxy) {
this.proxy = proxy;
return this;
}
/**
* Sets the proxy selection policy to be used if no {@link #proxy proxy} is specified
* explicitly. The proxy selector may return multiple proxies; in that case they will be tried
* in sequence until a successful connection is established.
*
*
If unset, the {@link ProxySelector#getDefault() system-wide default} proxy selector will
* be used.
*/
public Builder proxySelector(ProxySelector proxySelector) {
this.proxySelector = proxySelector;
return this;
}
/**
* Sets the handler that can accept cookies from incoming HTTP responses and provides cookies to
* outgoing HTTP requests.
*
*
If unset, {@linkplain CookieJar#NO_COOKIES no cookies} will be accepted nor provided.
*/
public Builder cookieJar(CookieJar cookieJar) {
if (cookieJar == null) throw new NullPointerException("cookieJar == null");
this.cookieJar = cookieJar;
return this;
}
/** Sets the response cache to be used to read and write cached responses. */
void setInternalCache(@Nullable InternalCache internalCache) {
this.internalCache = internalCache;
this.cache = null;
}
/** Sets the response cache to be used to read and write cached responses. */
public Builder cache(@Nullable Cache cache) {
this.cache = cache;
this.internalCache = null;
return this;
}
/**
* Sets the DNS service used to lookup IP addresses for hostnames.
*
*
If unset, the {@link Dns#SYSTEM system-wide default} DNS will be used.
*/
public Builder dns(Dns dns) {
if (dns == null) throw new NullPointerException("dns == null");
this.dns = dns;
return this;
}
/**
* Sets the socket factory used to create connections. OkHttp only uses the parameterless {@link
* SocketFactory#createSocket() createSocket()} method to create unconnected sockets. Overriding
* this method, e. g., allows the socket to be bound to a specific local address.
*
*
If unset, the {@link SocketFactory#getDefault() system-wide default} socket factory will
* be used.
*/
public Builder socketFactory(SocketFactory socketFactory) {
if (socketFactory == null) throw new NullPointerException("socketFactory == null");
this.socketFactory = socketFactory;
return this;
}
/**
* Sets the socket factory used to secure HTTPS connections. If unset, the system default will
* be used.
*
* @deprecated {@code SSLSocketFactory} does not expose its {@link X509TrustManager}, which is
* a field that OkHttp needs to build a clean certificate chain. This method instead must
* use reflection to extract the trust manager. Applications should prefer to call {@link
* #sslSocketFactory(SSLSocketFactory, X509TrustManager)}, which avoids such reflection.
*/
public Builder sslSocketFactory(SSLSocketFactory sslSocketFactory) {
if (sslSocketFactory == null) throw new NullPointerException("sslSocketFactory == null");
X509TrustManager trustManager = Platform.get().trustManager(sslSocketFactory);
if (trustManager == null) {
throw new IllegalStateException("Unable to extract the trust manager on " + Platform.get()
+ ", sslSocketFactory is " + sslSocketFactory.getClass());
}
this.sslSocketFactory = sslSocketFactory;
this.certificateChainCleaner = CertificateChainCleaner.get(trustManager);
return this;
}
/**
* Sets the socket factory and trust manager used to secure HTTPS connections. If unset, the
* system defaults will be used.
*
*
Most applications should not call this method, and instead use the system defaults. Those
* classes include special optimizations that can be lost if the implementations are decorated.
*
*
If necessary, you can create and configure the defaults yourself with the following code:
*
*
{@code
*
* TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(
* TrustManagerFactory.getDefaultAlgorithm());
* trustManagerFactory.init((KeyStore) null);
* TrustManager[] trustManagers = trustManagerFactory.getTrustManagers();
* if (trustManagers.length != 1 || !(trustManagers[0] instanceof X509TrustManager)) {
* throw new IllegalStateException("Unexpected default trust managers:"
* + Arrays.toString(trustManagers));
* }
* X509TrustManager trustManager = (X509TrustManager) trustManagers[0];
*
* SSLContext sslContext = SSLContext.getInstance("TLS");
* sslContext.init(null, new TrustManager[] { trustManager }, null);
* SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();
*
* OkHttpClient client = new OkHttpClient.Builder()
* .sslSocketFactory(sslSocketFactory, trustManager);
* .build();
* }
*/
public Builder sslSocketFactory(
SSLSocketFactory sslSocketFactory, X509TrustManager trustManager) {
if (sslSocketFactory == null) throw new NullPointerException("sslSocketFactory == null");
if (trustManager == null) throw new NullPointerException("trustManager == null");
this.sslSocketFactory = sslSocketFactory;
this.certificateChainCleaner = CertificateChainCleaner.get(trustManager);
return this;
}
/**
* Sets the verifier used to confirm that response certificates apply to requested hostnames for
* HTTPS connections.
*
* If unset, a default hostname verifier will be used.
*/
public Builder hostnameVerifier(HostnameVerifier hostnameVerifier) {
if (hostnameVerifier == null) throw new NullPointerException("hostnameVerifier == null");
this.hostnameVerifier = hostnameVerifier;
return this;
}
/**
* Sets the certificate pinner that constrains which certificates are trusted. By default HTTPS
* connections rely on only the {@link #sslSocketFactory SSL socket factory} to establish trust.
* Pinning certificates avoids the need to trust certificate authorities.
*/
public Builder certificatePinner(CertificatePinner certificatePinner) {
if (certificatePinner == null) throw new NullPointerException("certificatePinner == null");
this.certificatePinner = certificatePinner;
return this;
}
/**
* Sets the authenticator used to respond to challenges from origin servers. Use {@link
* #proxyAuthenticator} to set the authenticator for proxy servers.
*
*
If unset, the {@linkplain Authenticator#NONE no authentication will be attempted}.
*/
public Builder authenticator(Authenticator authenticator) {
if (authenticator == null) throw new NullPointerException("authenticator == null");
this.authenticator = authenticator;
return this;
}
/**
* Sets the authenticator used to respond to challenges from proxy servers. Use {@link
* #authenticator} to set the authenticator for origin servers.
*
*
If unset, the {@linkplain Authenticator#NONE no authentication will be attempted}.
*/
public Builder proxyAuthenticator(Authenticator proxyAuthenticator) {
if (proxyAuthenticator == null) throw new NullPointerException("proxyAuthenticator == null");
this.proxyAuthenticator = proxyAuthenticator;
return this;
}
/**
* Sets the connection pool used to recycle HTTP and HTTPS connections.
*
*
If unset, a new connection pool will be used.
*/
public Builder connectionPool(ConnectionPool connectionPool) {
if (connectionPool == null) throw new NullPointerException("connectionPool == null");
this.connectionPool = connectionPool;
return this;
}
/**
* Configure this client to follow redirects from HTTPS to HTTP and from HTTP to HTTPS.
*
*
If unset, protocol redirects will be followed. This is different than the built-in {@code
* HttpURLConnection}'s default.
*/
public Builder followSslRedirects(boolean followProtocolRedirects) {
this.followSslRedirects = followProtocolRedirects;
return this;
}
/** Configure this client to follow redirects. If unset, redirects will be followed. */
public Builder followRedirects(boolean followRedirects) {
this.followRedirects = followRedirects;
return this;
}
/**
* Configure this client to retry or not when a connectivity problem is encountered. By default,
* this client silently recovers from the following problems:
*
*
* - Unreachable IP addresses. If the URL's host has multiple IP addresses,
* failure to reach any individual IP address doesn't fail the overall request. This can
* increase availability of multi-homed services.
*
- Stale pooled connections. The {@link ConnectionPool} reuses sockets
* to decrease request latency, but these connections will occasionally time out.
*
- Unreachable proxy servers. A {@link ProxySelector} can be used to
* attempt multiple proxy servers in sequence, eventually falling back to a direct
* connection.
*
*
* Set this to false to avoid retrying requests when doing so is destructive. In this case the
* calling application should do its own recovery of connectivity failures.
*/
public Builder retryOnConnectionFailure(boolean retryOnConnectionFailure) {
this.retryOnConnectionFailure = retryOnConnectionFailure;
return this;
}
/**
* Sets the dispatcher used to set policy and execute asynchronous requests. Must not be null.
*/
public Builder dispatcher(Dispatcher dispatcher) {
if (dispatcher == null) throw new IllegalArgumentException("dispatcher == null");
this.dispatcher = dispatcher;
return this;
}
/**
* Configure the protocols used by this client to communicate with remote servers. By default
* this client will prefer the most efficient transport available, falling back to more
* ubiquitous protocols. Applications should only call this method to avoid specific
* compatibility problems, such as web servers that behave incorrectly when HTTP/2 is enabled.
*
* The following protocols are currently supported:
*
*
*
* This is an evolving set. Future releases include support for transitional
* protocols. The http/1.1 transport will never be dropped.
*
*
If multiple protocols are specified, ALPN will be used to
* negotiate a transport.
*
*
{@link Protocol#HTTP_1_0} is not supported in this set. Requests are initiated with {@code
* HTTP/1.1} only. If the server responds with {@code HTTP/1.0}, that will be exposed by {@link
* Response#protocol()}.
*
* @param protocols the protocols to use, in order of preference. The list must contain {@link
* Protocol#HTTP_1_1}. It must not contain null or {@link Protocol#HTTP_1_0}.
*/
public Builder protocols(List protocols) {
// Create a private copy of the list.
protocols = new ArrayList<>(protocols);
// Validate that the list has everything we require and nothing we forbid.
if (!protocols.contains(Protocol.HTTP_1_1)) {
throw new IllegalArgumentException("protocols doesn't contain http/1.1: " + protocols);
}
if (protocols.contains(Protocol.HTTP_1_0)) {
throw new IllegalArgumentException("protocols must not contain http/1.0: " + protocols);
}
if (protocols.contains(null)) {
throw new IllegalArgumentException("protocols must not contain null");
}
// Remove protocols that we no longer support.
protocols.remove(Protocol.SPDY_3);
// Assign as an unmodifiable list. This is effectively immutable.
this.protocols = Collections.unmodifiableList(protocols);
return this;
}
public Builder connectionSpecs(List connectionSpecs) {
this.connectionSpecs = Util.immutableList(connectionSpecs);
return this;
}
/**
* Returns a modifiable list of interceptors that observe the full span of each call: from
* before the connection is established (if any) until after the response source is selected
* (either the origin server, cache, or both).
*/
public List interceptors() {
return interceptors;
}
public Builder addInterceptor(Interceptor interceptor) {
if (interceptor == null) throw new IllegalArgumentException("interceptor == null");
interceptors.add(interceptor);
return this;
}
/**
* Returns a modifiable list of interceptors that observe a single network request and response.
* These interceptors must call {@link Interceptor.Chain#proceed} exactly once: it is an error
* for a network interceptor to short-circuit or repeat a network request.
*/
public List networkInterceptors() {
return networkInterceptors;
}
public Builder addNetworkInterceptor(Interceptor interceptor) {
if (interceptor == null) throw new IllegalArgumentException("interceptor == null");
networkInterceptors.add(interceptor);
return this;
}
/**
* Configure a single client scoped listener that will receive all analytic events
* for this client.
*
* @see EventListener for semantics and restrictions on listener implementations.
*/
public Builder eventListener(EventListener eventListener) {
if (eventListener == null) throw new NullPointerException("eventListener == null");
this.eventListenerFactory = EventListener.factory(eventListener);
return this;
}
/**
* Configure a factory to provide per-call scoped listeners that will receive analytic events
* for this client.
*
* @see EventListener for semantics and restrictions on listener implementations.
*/
public Builder eventListenerFactory(EventListener.Factory eventListenerFactory) {
if (eventListenerFactory == null) {
throw new NullPointerException("eventListenerFactory == null");
}
this.eventListenerFactory = eventListenerFactory;
return this;
}
public OkHttpClient build() {
return new OkHttpClient(this);
}
}
}